2 * Copyright 2016 Facebook, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #include <folly/test/SingletonTestStructs.h>
22 // A simple class that tracks how often instances of the class and
23 // subclasses are created, and the ordering. Also tracks a global
24 // unique counter for each object.
25 std::atomic<size_t> global_counter(19770326);
28 std::vector<Watchdog*>& Watchdog::creation_order() {
29 static std::vector<Watchdog*> ret;
33 Watchdog::Watchdog() : serial_number(++global_counter) {
34 creation_order().push_back(this);